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状语从句中从句的省略现象（1）连词+过去分词Pressurecanbeincreasedwhenneeded.Unlessrepaired,thewashingmachineisnouse.（2）连词+现在分词Lookoutwhilecrossingthestreet.（3）连词+形容词/其他常见的有ifnecessary,ifpossible,whennecessary,ifany等。规则：当状语从句的主语和主句的主语一致时，可以省略状语从句中的主语和系动词be.•【2012安徽】30.Whenforhisviewsabouthisteachingjob,Philipsaidhe•founditveryinterestingandrewarding.•A.askingB.asked•C.havingaskedD.tobeasked•(08·安徽)—Haveyougotanyparticularplansforthecomingholiday?•—Yes,,I’mgoingtovisitsomehomesfortheoldinthecity.•A.IfeverB.Ifbusy•C.IfanythingD.Ifpossible状语从句的时态问题•【2012北京】21.—Lookatthoseclouds!•—Don’tworry.______itrains,we’llstillhaveagreattime.•A.EvenifB.Asthough•C.IncaseD.Ifonly•(2011上海卷)36.Ifalotofpeoplesayafilmisnotgood,Iwon’tbothertoseeit,orI’llwaititcomesoutonDVD.•A.whetherB.after•C.thoughD.until•【2009山东,32】•—Shallwehaveourpicnictomorrow?•—______itdoesn’train.•A.UntilB.WhileC.OnceD.If•在条件，时间和让步从句中，用一般现在时表示一般将来时.状语从句的倒装•【2012陕西】18.Hot___thenightairwas,wesleptdeeplybecauseweweresotiredafterthelongjourney.•A.althoughB.asC.whileD.however•①否定词开头；notuntil•②so加adj.开头；•③as/though引导的让步状语从句。•特别注意：•Hardly…when…•Nosooner…than…•Childasheis,…•Hardlyhadhegottothestationwhenthetrainleft.•Nosoonerhadhegottothestationthanthetrainleft.•Childasheis,hecanspeaksevenforeignlanguages.